Means and method for producing charges of molten glass



C. R. LOTT.

FOR PRODUCING CHARGES 0F MOLTEN GLASS". APPLICATION FILED JAN. 1, 1920.

MEANS AND METHOD Patented June 28, 1921 UNITED STATES PATENT OFFICE.

CLYDE R. LOTT, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNO-R TO THE GUARDIAN TRUST AND SAVDSI'GS BANK OF TOLEDO, TRUSTEE, OF TOLEDO,

OHIO, A CORPORATION OF OHIO.

MEANS AND METHOD FOR PRODUCING CHARGES OF MOLTEN GLASS.

Original application filed September 27, 1909, Serial No. 519,678. Divided and this application filed.

January 7, 1920. Serial No. 349,922.

To all whom it mag concern;

' lowing is a specification.

My invention relates to a method and apparatus for flowing molten glass from a tank or container and separating it into individual masses or charges to be used inmaking and forming glass bottles, jars or other articles.

An object of the invention is to provide suitable mechanism for providing charges or masses of glass especially adapted for making open wareor articles of comparatively large size. Other objects of the invention will appear hereinafter.

The present application is a division of my co-pending application, Serial Number 519,678, filed September 27 1909, apparatus for making glass articles.

In the accompanying drawings:

Figure I is a part sectional elevation of the apparatus.

Fig. 2 is a plan view of a portion of the apparatus, showing particularly the shears and their operating mechanism.

Fig. 3 is a perspective view of a portion of the shear operating mechanism.

Fig. 4 is a longitudinal section of the plunger valve enlarged and broken away.

Fig. 5 is a section at the line .55 on Fig. l.

Fig. 6 is a detail viewenlarged of one of the shear blades.

Molten glass is supplied from a furnace 230. A charger 260-is provided with anintake pipe 257 whose one end is normally closed by a valve 258 connected with'a lever 259, which is operated by a lever 57 operated by a lever 57 to open and close the valve. The charger'260 as shown is a shallow funnel shaped container arranged below the outer end of the outlet, and the outlet and' the container are inclosed by a casing 261. The container is provided with an overflow spout 262 and with an opening in its bottom.

The opening is closed by a valve 263 hav- Specification of Letters Patent. Patented J 111 16 28, 1921.

ing air openings 264 therethrough by which the air passage 264 extending longitudin'ally of the'valve to the lower end thereof is kept open to atmospheric pressure, and a link 265 connects the upper end of the stem of the valve with the lever 57 which is operated by the lever 57-. The lever 5'? is periodically actuated to move vertically by any suitable means,vas for example, that fully disclosed in my-copending application, Serial Number 519,678, above referred to.

A second link 266 connects the lever 57" with the end of another lever 267 pivoted as at 268,- and the opposite end of the lever 267 is connected by a link 269' with the inner end of the elbow lever 259 to which is connected the valve 258. i

The shears as shown comprise a pair of blades 283 pivoted together and to a bar' 284 as at 285. The blades do not cross atthe pivot point but their rearwardly-extending shanks are turned outward at the point 12 at a substantial angle to the blades,

so that as the rear ends of the shanks are moved toward each other the blades are sep arated. The shanks are connected by links nected by a link 325- with one of the arms of an elbow lever 326, which is pivoted as at .327 to a stationary support (not shown),

and whose other end is provided with a lateral extension 328 which engages the recess in the end of the lever 57.

The free end of the bar 290 is connected .by a link 329, with one of the arms of an elbow lever 330 pivoted as at 331 on the bar 324 and whose other arm is slotted and connected to a longitudinally movable-bar 332 by means of a pin 333. engaging the slot and the opposite end of the :-bar is connected by a link 334 with one of the arms of an elbow.

lever 335, pivoted as at 336 to a stationary connection between the link and the arm of the lever 335 being a lost motion connection as shown.

In operation as the lever 57 moves downward, it operates through the elbow lever 326 andarm 324 to swing the bar 284 about its pivot 10 and thereby move the shears bodily forward to the Fig. 2 position. During this movement the lost motion in the link 337 is taken up so that the continued movement of the lever .326 operates through the elbow lever 335, bar 332 and elbow lever 330 to move the bar 290 longitudinally rearwardly along the bar 284 toward the pivot 10. This swings the lever 288 on itspivot, and the blades are moved together. A reverse movement of the bar moves the blades apart.

It will be notedthat the valve plug or plunger 263 is arranged to reciprocate vertically within the container or receptacle 260. Also the connections between the valve .263 and the valve 258 will cause the valves to operate in synchronism, the valve 258 being moved forward or toward the intake; pipe or spout 257 as the valve 263 is lowcred. The valve 258 willobviouslycontrol the transfer of glass from the furnace or main supply chamber through the passageway 257 to the auxiliary chamber 260, causing a fluctuating or intermittent flow through the spout. That is to say, each time thevalve 258 moves back to open position, it admits a predetermined quantity of glass to the mouth of the spout 257, and asthe valve moves forward to closed position'it exerts an impelling force on the glass,which assists in advancing it through the spout.

The shears are operated in synchronism with the operation ofthe valves, as each reciprocation 'ofthe actuating lever 57 will cause one complete operation ot the shears. p

The air passage 264 in the plunger valve 263 prevents air being trapped in the glass at the lower end of the plunger and also assists in giving a tapered or pointed lower end on the ls suing gob of glass. Without such opening, there is a tendency for the glass adhering to the lower end of the plunger after a charge. has'been severed, to be 'drawnupward with the plunger. As the latter moves upward there is also a tendency .for -'the glass surrounding it, at the commencement of its upward movement, to roll in and trap a bubble of air.-' Byproviding the air channel, theglass at-the lower end of the plug draws down more freely, fdrming a'tapered or 'pointedend on the gob. of glass which is beginning to form and issue rom the orifice, and also tends to prevent the entrappingof air in the issuing glass.

Variations may be resorted to within the spiritand scope of my invention.

What I claim is:

1. In an apparatus for delivering charges of molten glass, the combination of a tank to contain molten glass, a charging device having a receiving chamber located externally of the tank, and positively operated means operating in the glass for periodically supplying uniform charges of molten glass from the tank to said chamber, and means'for periodically discharging charges of'glass'from said chamber.

2. In an apparatus for delivering charges of molten glass, 'a main supply chamber, an auxiliary chamber having anoutlet, means operating in the glass to govern thedelivery of a supply of molten glass from the main chamber to the auxiliary chamber, a mechanical device movable within the auxiliary chamber for controllin the discharge therefrom, means for severing charges from the glass delivered through the outlet opening, and means for operating said governing. means, discharge controlling device and severing means in synchronism.

3. In an apparatus of the ply tank,a charge feed chamber, positively operated movable mechanical means normally in contact with glass in the tank operative in its movement. to control the supcharacter described, the combination of a main glass supply of glass to the char e feed chamber from the tank, said charge eed chamber having trolling the discha'rgeof glass through the outlet of the charge feed chamber, shearing mechanism to sever the discharged glass as delivered from the charge feed chamber, and operativel connected mechanism foroperating sai .member, the vertically movable bodyand the shear mechanism in synchronism.

'5. The method of feeding molten glass, which "consists intermittentlydelivering from a tank to a container exterior thereof,

predetermined 'quantities'fof molten glass,

causing the. same to be intermittently discharged downward ,from the container discharged glass through an outlet-orifice and subjecting the he action of a mechani-. cal shearing means? spaced below the orifice whereby to "form mold charges.

r ins-2,993

molten glass, a receptacle into which lass passes from the furnace provided. wit an outlet, a device to regulate the passage of glass into said receptacle, a device ad'acent 7 said outlet to regulate the discharge 0 glass therefrom, and automatic means operable independently of the glass to reciprocate said devices respectivel in the general direction of movement 0 the glass into said receptacle and of said glass through said outlet 7-. The combination bf a furnace to contain molten glass, a receptacle adjacent thereto, means providing a passageway from the furnace to said receptacle, a periodically actuated mechanical device operating within said receptacle for causing the periodic discharge therefromof predetermined quantities of glass, and a second device for controlling the transfer of'glass through said passageway and having mechanical connections with said first-mentioned device for operation in a predetermined timed relation to the operation of said firstmentioned device. 8. A receptacle for molten glasswith an outlet opening in the bottom thereof, a

.plunger within the receptacle directly over said openin means to reciprocate the plunger vertically, a pair of shears, and means to periodically project the shears bodily to a point beneath said opening and to their actuate them to sever the glass and to their withdraw them, said shears being operated in synchrcinism with themovements of the plunger."

9. The combination of 'a container for molten glass having an outlet opening, and a valve movable toward and from said opening to control the flow, said valve formed with an openingextending therethrough:

and normally open to atmospheric pressure. 10. The combination of a contalner for molten glass having'a discharge orifice, and a plug movable toward and from said orifice to control the flow of glass therethrough, said plug formed with an opening extending longitudinally therethrough to the end adjacent said orifice and of smaller diameter at said end than the orifice.

11. The combination of a container vfor molten glass having a discharge opening. in its bottom, a reciprocating body having its lower end in said container and cooperatihg;

with the discharge opening to control the '-dis charge of glass therefrom, cutters having 7 moving saidcutters to -meet in severing position below the dlsc t'ting edges arranged to approach charge opening, -periodically reciprocating said body toward from itferent directions the glass below the disand automatic means ,'--forfrom the discharge openin and for cause their edges to and charge opening substantially in line with said reciprocating body and in timed relation to the movement thereof.-

12. The combination ofja container for moltenglass having adischarge opening in its bottom, a reciprocating body having its lower end in said container and cooperating with the discharge opening to control the discharge of glass therefrom, cutters having cutting edges arranged to approach from different directions the glass protruding from the discharge-opening, and automatic means for positively moving said body periodically toward the discharge opening and for moving said cutters to cause their edges to meet in severing position below the discharge opening substantially in line with said reciprocating body and in timed relaglass in the tank, mechanical means for posi-" tively moving said member periodically in a direction toward the charge feed chamber to control the supply of glass from the main supply tankto the charge feed chamber,

said charge feed chamber having an outlet, and mechanical means within said chamber for controlling the discharge of glass through said outlet.-

"14. In an apparatus of the character described, the combination of a glass supply tank, a charge feed chamber for comm'um cation with the; tank, having a discharge opening therein, means operatin in the g ass to control the deliveryof ass from the tank to the chamber, positive y operated mechanical means to operate said-controlling means periodically and thereby causea'predeterminedsupply of glass to be delivered periodically from the tank to'the charge feed chamber, and means operatively associated with the last mentione means for controlling the discharge of glass throughthe' discharge opening "of the charge feed chamber.

15. In glass feeding mechanism, the combination ofareceptacle for a. main supply of molten glass, a charge feed chamber adjacent thereto and having means of communication thprewith, a movable member projecting into the main receptacle and opof glass from the rage I feed chamber, a'vertical Ty movable body controlling thedischargeof glass lthrou h the outlet of the charge 'fe'ed chamber, an oper-' atively connected mechanism for operating said member and the vertically movable body in synchronism,

, gned at Washingtomin the District; of Columbia, this 29th day, of December, 1919.

CLYDE a. LOTT.

relative in its movement to regulatethe feed tacle to the charge 4 

